A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec
The southernmost site where permafrost has been located in the QuebecLabrador peninsula is in a peatland on the subalpine summit of Lac des Cygnes Mountain (47°41'N, 70°36'W). Because of the thickness of its peat deposit, this site contains rich ecological information about the history of...
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2001
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crcansciencepubl:10.1139/e00-110 2023-12-17T10:48:28+01:00 A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec Zimmermann, Claudia Lavoie, Claude 2001 http://dx.doi.org/10.1139/e00-110 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-110 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 38, issue 6, page 909-919 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2001 crcansciencepubl https://doi.org/10.1139/e00-110 2023-11-19T13:39:33Z The southernmost site where permafrost has been located in the QuebecLabrador peninsula is in a peatland on the subalpine summit of Lac des Cygnes Mountain (47°41'N, 70°36'W). Because of the thickness of its peat deposit, this site contains rich ecological information about the history of the peatland and its surrounding subalpine environment. We conducted a detailed macrofossil analysis to reconstruct the 6000-year history of the peatland. In general, the development of the Lac des Cygnes Mountain peatland has followed the classic succession of rich fen poor fen bog found in other peatlands in subarctic, boreal, and temperate environments. An abrupt decline in all tree macrofossils ca. 4000 BP suggests that a major deforestation event occurred on the summit of Lac des Cygnes Mountain. The exact cause of this deforestation event is unknown, but fire is a possible factor. The lack of absolute chronological resolution near the top of the macrofossil record precludes proper dating of permafrost inception, but the balance of evidence appears to indicate that the permafrost is modern. Article in Journal/Newspaper permafrost Subarctic Canadian Science Publishing (via Crossref) Canadian Journal of Earth Sciences 38 6 909 919 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Zimmermann, Claudia Lavoie, Claude A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec |
topic_facet |
General Earth and Planetary Sciences |
description |
The southernmost site where permafrost has been located in the QuebecLabrador peninsula is in a peatland on the subalpine summit of Lac des Cygnes Mountain (47°41'N, 70°36'W). Because of the thickness of its peat deposit, this site contains rich ecological information about the history of the peatland and its surrounding subalpine environment. We conducted a detailed macrofossil analysis to reconstruct the 6000-year history of the peatland. In general, the development of the Lac des Cygnes Mountain peatland has followed the classic succession of rich fen poor fen bog found in other peatlands in subarctic, boreal, and temperate environments. An abrupt decline in all tree macrofossils ca. 4000 BP suggests that a major deforestation event occurred on the summit of Lac des Cygnes Mountain. The exact cause of this deforestation event is unknown, but fire is a possible factor. The lack of absolute chronological resolution near the top of the macrofossil record precludes proper dating of permafrost inception, but the balance of evidence appears to indicate that the permafrost is modern. |
format |
Article in Journal/Newspaper |
author |
Zimmermann, Claudia Lavoie, Claude |
author_facet |
Zimmermann, Claudia Lavoie, Claude |
author_sort |
Zimmermann, Claudia |
title |
A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec |
title_short |
A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec |
title_full |
A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec |
title_fullStr |
A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec |
title_full_unstemmed |
A paleoecological analysis of a southern permafrost peatland, Charlevoix, Quebec |
title_sort |
paleoecological analysis of a southern permafrost peatland, charlevoix, quebec |
publisher |
Canadian Science Publishing |
publishDate |
2001 |
url |
http://dx.doi.org/10.1139/e00-110 http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-110 |
genre |
permafrost Subarctic |
genre_facet |
permafrost Subarctic |
op_source |
Canadian Journal of Earth Sciences volume 38, issue 6, page 909-919 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e00-110 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
38 |
container_issue |
6 |
container_start_page |
909 |
op_container_end_page |
919 |
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1785572646897844224 |